Calculate A+B-C+D
[6410] Calculate A+B-C+D - Look at the series (7, 16, 43, B, A, 1096, 3283, 9844, 29527, C, 265723, D, ...), determine the pattern, and find the unknown values (A, B, C and D) and calculate A+B-C+D! - #brainteasers #math - Correct Answers: 19 - The first user who solved this task is Nasrin 24 T
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Calculate A+B-C+D

Look at the series (7, 16, 43, B, A, 1096, 3283, 9844, 29527, C, 265723, D, ...), determine the pattern, and find the unknown values (A, B, C and D) and calculate A+B-C+D!
Correct answers: 19
The first user who solved this task is Nasrin 24 T.
#brainteasers #math
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Soldier Stands Guard


A new soldier was on sentry duty at the main gate. His orders were clear. No car was to enter unless it had a special sticker on the windshield. A big Army car came up with a general seated in the back. The sentry said, "Halt, who goes there?"
The chauffeur, a corporal, says, "General Wheeler."
"I'm sorry, I can't let you through. You've got to have a sticker on the windshield."
The general said, "Drive on!"
The sentry said, "Hold it! You really can't come through. I have orders to shoot if you try driving in without a sticker."
The general repeated, "I'm telling you, son, drive on!"
The sentry walked up to the rear window and said, "General, I'm new at this. Do I shoot you or the the driver?"
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Otto Brunfels

Died 23 Nov 1534 (born c. 1488).German botanist, considered by Carolus Linnaeus to be one of the founders of modern botany. His Herbarum vivae eicones (1530-36) was the first of the great printed herbals. It has been stated that his work may be considered as a link between ancient and modern botany. He adopted the ancient classification of plants as woody and herbaceous. Brunfels rejected the alphabetical sequence of genera in favor of an association based on agreement in medicinal value but he gave no thought to the nomenclature of species. The illustrations were lifelike and not copies from earlier herbals. The plants were drawn from nature by Hans (II) Weiditz, using live models rather than earlier drawings.[Image: "Carduus Fullonum. Kartendystel," from Herbarum vivae eicones ... Tomus herbarii III, page 32]
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